This is part of the fifth chapter of the Kaifuku Jutsushi no Yarinaoshi manga series.
Summary[]
The Captain of the Imperial Knights tosses over a beaten Keyaru, much to Freya's delight. However, the captain alleges that Keyaru's reason for escaping was something he couldn't ignore, and requests a private audience with her. Freya invites him to her room, and the captain smiles.
As soon as they enter her room, the captain beheads Freya's attendants and tackles her to the ground to steal her magic. When Freya asked for the meaning behind his actions, the captain reveals himself to be a disguised Keyaru, eager to exact revenge.